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Abstract：
OBJECTIVE: To summarize the open-eruption technique of impacted anterior maxillary teeth, this study reports a technically improved operation on surgical exposure based on dental follicles and evaluates post-treatment periodontal health considering the effect of dental follicles.
METHODS: Patients who underwent open-eruption technique with unilateral labially impacted maxillary central incisors were selected. The impacted teeth were assigned to the experimental group, and the contralateral unimpacted maxillary central incisors were assigned to the control group. In the surgical exposure, the new technique makes use of dental follicles to manage the soft tissue, so as to preserve soft tissue for better aesthetic results and healthier periodontal tissue. Tooth length, root length, alveolar bone loss, and alveolar bone thickness were recorded after the therapy.
RESULTS: A total of 17 patients with unilateral maxillary central incisor impaction were successfully treated. The tooth length and root length of the two groups showed a statistically significant difference between the impacted and homonym teeth, with a shorter length in the impacted tooth (P<0.05). More labial alveolar bone loss was found in the experimental group compared with that in the control group (P<0.05). The outcomes of the cementoenamel junction width, pa- latal alveolar bone loss, and alveolar bone thickness did not indicate statistical significance between the experimental and control groups (P>0.05).
CONCLUSIONS: In the surgical exposure, the new technique uses dental follicles to manage the soft tissue and preserve it for better aesthetic results and healthier periodontal tissues.
目的: 总结既往上前牙区埋伏牙开放式牵引方法的基础上，报告一种基于牙囊的软组织处理技术，并监测治疗后埋伏牙牙根长度变化和牙槽骨丢失量，探讨牙囊在埋伏上颌中切牙唇侧微创开放式牵引中的重要作用。方法: 选择单侧唇侧埋伏上颌中切牙并采用开放式牵引技术治疗的患者，将埋伏中切牙纳入试验组，将对侧未受影响的中切牙纳入对照组。在外科手术暴露埋伏上颌中切牙时，利用埋伏牙周围的牙囊组织进行术区软组织管理，最大程度地保存埋伏牙周围软硬组织量。在埋伏上颌中切牙牵引至牙合平面后，记录其牙长、根长、骨丢失量、骨厚度等测量值。结果: 成功牵引了17例单侧唇侧埋伏上颌中切牙。牵引后试验组与对照组之间，牙长、根长、唇侧骨丢失量的差异有统计学意义（P<0.05），唇-腭釉牙骨质界处宽度、腭侧骨丢失量、唇侧骨厚度、腭侧骨厚度、根尖牙槽骨厚度的差异无统计学意义（P>0.05）。结论: 在外科手术暴露唇侧埋伏上颌中切牙时，本方法利用埋伏牙周围的牙囊组织进行术区软组织管理，最大程度地保存埋伏牙周围软硬组织量，尽可能在牵引萌出后获得更好的美学效果和健康的牙周组织。.
METHODS: Patients who underwent open-eruption technique with unilateral labially impacted maxillary central incisors were selected. The impacted teeth were assigned to the experimental group, and the contralateral unimpacted maxillary central incisors were assigned to the control group. In the surgical exposure, the new technique makes use of dental follicles to manage the soft tissue, so as to preserve soft tissue for better aesthetic results and healthier periodontal tissue. Tooth length, root length, alveolar bone loss, and alveolar bone thickness were recorded after the therapy.
RESULTS: A total of 17 patients with unilateral maxillary central incisor impaction were successfully treated. The tooth length and root length of the two groups showed a statistically significant difference between the impacted and homonym teeth, with a shorter length in the impacted tooth (P<0.05). More labial alveolar bone loss was found in the experimental group compared with that in the control group (P<0.05). The outcomes of the cementoenamel junction width, pa- latal alveolar bone loss, and alveolar bone thickness did not indicate statistical significance between the experimental and control groups (P>0.05).
CONCLUSIONS: In the surgical exposure, the new technique uses dental follicles to manage the soft tissue and preserve it for better aesthetic results and healthier periodontal tissues.
目的: 总结既往上前牙区埋伏牙开放式牵引方法的基础上，报告一种基于牙囊的软组织处理技术，并监测治疗后埋伏牙牙根长度变化和牙槽骨丢失量，探讨牙囊在埋伏上颌中切牙唇侧微创开放式牵引中的重要作用。方法: 选择单侧唇侧埋伏上颌中切牙并采用开放式牵引技术治疗的患者，将埋伏中切牙纳入试验组，将对侧未受影响的中切牙纳入对照组。在外科手术暴露埋伏上颌中切牙时，利用埋伏牙周围的牙囊组织进行术区软组织管理，最大程度地保存埋伏牙周围软硬组织量。在埋伏上颌中切牙牵引至牙合平面后，记录其牙长、根长、骨丢失量、骨厚度等测量值。结果: 成功牵引了17例单侧唇侧埋伏上颌中切牙。牵引后试验组与对照组之间，牙长、根长、唇侧骨丢失量的差异有统计学意义（P<0.05），唇-腭釉牙骨质界处宽度、腭侧骨丢失量、唇侧骨厚度、腭侧骨厚度、根尖牙槽骨厚度的差异无统计学意义（P>0.05）。结论: 在外科手术暴露唇侧埋伏上颌中切牙时，本方法利用埋伏牙周围的牙囊组织进行术区软组织管理，最大程度地保存埋伏牙周围软硬组织量，尽可能在牵引萌出后获得更好的美学效果和健康的牙周组织。.
摘要：
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